tda4856-v6 NXP Semiconductors, tda4856-v6 Datasheet - Page 15

• Manufacturer Part Number: tda4856-v6
• Description: I2c-bus Autosync Deflection Controller For Pc Monitors
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS
V
2003 Sep 30
Horizontal sync separator
I
V
V
t
t
t
I
I
V
V
V
I
t
R
R
Automatic polarity correction for horizontal sync
t
Vertical sync integrator
t
Vertical sync slicer (DC-coupled, TTL compatible): pin VSYNC
V
V
I
t
---------- -
NPUT CHARACTERISTICS FOR
r(HSYNC)
f(HSYNC)
W(HSYNC)(min)
i(HSYNC)
NPUT CHARACTERISTICS FOR
ch(HSYNC)
W(HSYNC)(min)
d(HPOL)
int(V)
i(VSYNC)
CC
P(H)
i(HSYNC)
HSYNC(sl)
HSYNC
HSYNC(AC,sl)
clamp(HSYNC)
t
i(VSYNC)
VSYNC(sl)
source(max)
i(diff)(HSYNC)
I
PC monitors
H
2
= 12 V; T
SYMBOL
C-bus autosync deflection controller for
amb
= 25 C; peripheral components in accordance with Fig.1; unless otherwise specified.
sync input signal voltage
slicing voltage level
rise time of sync pulse
fall time of sync pulse
minimum width of sync pulse
input current
sync amplitude of video input
signal voltage
slicing voltage level
(measured from top sync)
top sync clamping voltage level R
charge current for coupling
capacitor
minimum width of sync pulse
maximum source resistance
differential input resistance
horizontal sync pulse width
related to t
delay time for changing polarity
integration time for generation
of a vertical trigger pulse
sync input signal voltage
slicing voltage level
input current
PARAMETER
DC-
AC-
H
COUPLED VIDEO SIGNALS
COUPLED
TTL
SIGNALS
V
V
R
R
V
duty cycle = 7%
during sync
f
I
f
I
f
I
f
I
0 V < V
H
HREF
H
HREF
H
HREF
H
HREF
:
i(HSYNC)
i(HSYNC)
i(HSYNC)
source
source
source
= 15.625 kHz;
= 31.45 kHz;
= 64 kHz;
= 100 kHz;
PIN
(
SYNC
15
= 0.52 mA
= 1.052 mA
= 2.141 mA
= 3.345 mA
CONDITIONS
HSYNC
= 50
= 50
= 50
i(VSYNC)
-
= 0.8 V
= 5.5 V
> V
ON
-
clamp(HSYNC)
VIDEO
< 5.5 V
,
NEGATIVE SYNC POLARITY
1.7
1.2
10
10
0.7
90
1.1
1.7
0.7
0.3
14
7
3.9
2.5
1.7
1.2
MIN.
1.4
300
120
1.28
2.4
80
20
10
5.7
3.8
1.4
TYP.
Product specification
)
1.6
500
500
10
150
1.5
3.4
1500
25
1.8
26
13
6.5
4.5
1.6
TDA4856
MAX.
200
10
V
V
ns
ns
mV
mV
V
%
ms
V
V
UNIT
s
A
A
A
s
s
s
s
s
A